Gas Burner Flame Arrestor Air-Fuel Mixing
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Solution Overview
Problem
Fired vessels in the oil and gas industry produce unwanted exhaust gases that cause air pollution, posing a challenge in reducing emissions while maintaining efficient operation.
Innovation Solution
A system comprising a metal fire box, main burner, pilot burner, and flame arrestors is used, where the flame arrestors provide ambient air to the burners, and a venturi tube is employed to create an air-fuel mixture, allowing for precise control of fuel pressure to minimize combustible emissions, with the option to adjust orifice diameters to optimize fuel flow and reduce emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fired vessel burns fuel to heat the fluid, then the heating function is achieved, but unwanted exhaust gases are produced that cause air pollution
Solution Approach 1:
The patent applies parameter changes by precisely controlling the fuel-air mixture ratio and fuel pressure to achieve complete combustion. By adjusting the orifice diameter and fuel flow parameters, the system optimizes combustion efficiency to minimize unburned hydrocarbons and combustible emissions while maintaining effective heating temperatures.
Solution Approach 2:
The system incorporates feedback mechanisms through flame arrestors and controlled venting systems that monitor and regulate the combustion process. The flame arrestors provide feedback on combustion completeness, allowing the system to adjust fuel flow and air mixing to maintain near-zero combustible emissions while sustaining the heating function.
2Productivity
If fuel flow is increased to maintain heating efficiency, then heating performance is improved, but fuel consumption and emissions increase
Solution Approach 1:
The patent utilizes parameter changes by implementing variable orifice diameters (5/64 inch and 7/64 inch options) that precisely control fuel flow rates. This allows the system to optimize the fuel-air mixture for complete combustion at different operating conditions, achieving high heating efficiency without excessive fuel consumption or emissions.
Solution Approach 2:
The system applies pneumatic principles through the use of fuel pressure control (3-4 psig ranges) and venturi-based mixing mechanisms. These pneumatic controls enable precise metering of fuel flow and automatic air-fuel ratio adjustment, maximizing heating efficiency while minimizing fuel waste and maintaining near-zero combustible emissions in the exhaust.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration significantly reduces air pollution by achieving nearly 0% combustible emissions, saving fuel and minimizing environmental impact, with potential savings of 47-81% of fuel usage.
Implementation Method 1
the main burner and the pilot burner include a venturi tube
Implementation Method 2
the first flame arrestor provides ambient air to the main burner and the pilot burner
Data Source
AI summary
A system for use with a fired vessel of production/separators or dehydration equipment that includes a metal box, a main burner, a pilot burner, and a flame arrestor. The main burner and the pilot burner are within the metal box and the first flame arrestor is connected to the metal box.